which is the big star in the solar system, sun , vinus, mars, which is the coldest planet in the solar system, neptune, murcury, uranus, which is the smalest planet, murcury , earth, moon, which is the hottest planet in the solar system, venus, murcury, neptune, which planet has rings, saturn, earth, mars, which planet is upside down, murcury, venus, mars.

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